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</head><body><p style="font-size: 12pt; font-family: helvetica, arial, sans-serif; color: rgb(51, 51, 51);">So what exactly is the energy co-efficiency of heavy vs. light flywheel? Heavy means more torque to take you up a steeper hill in higher gear, whereas light means less mass to move on acceleration so prompter speed? Something like that?<br></p><p style="font-size: 12pt; font-family: helvetica, arial, sans-serif; color: rgb(51, 51, 51);"><br></p><p style="font-size: 12pt; font-family: helvetica, arial, sans-serif; color: rgb(51, 51, 51);">Terry Smith, TR3A TS 58667<br></p><p style="font-size: 12pt; font-family: helvetica, arial, sans-serif; color: rgb(51, 51, 51);">New Hampshire<br></p><blockquote type="cite">On September 10, 2018 at 2:01 PM Rye Livingston <ryel@mac.com> wrote: <br> <br><div>For what it's worth, I switched to the 9lb alloy flywheel on my TR3. I believe the stock one is 32 lbs. I don't notice any difference getting started in 1st gear, and it does spin up nice and fast. </div><div><br></div><div class="ox-46ae33b836-x-apple-signature">Rye <br>PH: 530-FIND-RYE</div><div><br>On Sep 10, 2018, at 06:26 AM, John Macartney <john.macartney@ukpips.org.uk> wrote: <br> <br></div><div><blockquote type="cite"><div class="ox-46ae33b836-msg-quote"><div class="ox-46ae33b836-_stretch"><span class="ox-46ae33b836-body-text-content">I think I'm correct in saying one of the reasons for the heavier flywheel is<br>that the wet liner four engine was originally designed for the Standard<br>Vanguard with a two speed (low and high) gearbox with overdrive and also the<br>Ferguson tractor - both of which engines needed to develop shedloads of<br>torque at very low engine speeds. In both instances, much heavier flywheels<br>were required. Even if the early TR's could have got away with lighter<br>units, that would have meant having two different units. In those early post<br>WW2 days, iron and steel in the UK was in such short supply that having a<br>'common' flywheel across the range made economic sense from a production<br>cost viewpoint. Just an opinion<br><br>Jonmac<br><br>-----Original Message-----<br>From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of<br><a href="mailto:jpaynepbr@cox.net">jpaynepbr@cox.net</a><br>Sent: 23 July 2018 00:38<br>To: 'TERRY SMITH' <terryrs@comcast.net>; Randall <tr3driver@ca.rr.com>;<br>Andrew Uprichard <auprichard@uprichard.net>; George Haynes<br><ghaynestr4@aol.com>; <a href="mailto:triumphs@autox.team.net">triumphs@autox.team.net</a><br>Subject: Re: [TR] Electric Fans: Something Different<br><br>I believe the TR2/3/4 was more or less "balanced" internally. The flywheel<br>weighs about 3x what it needs to. I believe they used the flywheel to<br>smooth it out.<br><br>Jonas Payne<br>PBR Consulting Services, LLC<br>702.882.6711<br><br><br><br>** <a href="mailto:triumphs@autox.team.net">triumphs@autox.team.net</a> **<br><br>Donate: <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br>Archive: <a href="http://www.team.net/archive">http://www.team.net/archive</a><br>Forums: <a href="http://www.team.net/forums">http://www.team.net/forums</a><br>Unsubscribe/Manage:<br><a href="http://autox.team.net/mailman/options/triumphs/john.macartney@ukpips.org.uk">http://autox.team.net/mailman/options/triumphs/john.macartney@ukpips.org.uk</a><br><br><br>---<br>This email has been checked for viruses by Avast antivirus software.<br><a href="https://www.avast.com/antivirus">https://www.avast.com/antivirus</a><br><br>** <a href="mailto:triumphs@autox.team.net">triumphs@autox.team.net</a> **<br><br>Donate: <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br>Archive: <a href="http://www.team.net/pipermail/triumphs">http://www.team.net/pipermail/triumphs</a> <a href="http://www.team.net/archive">http://www.team.net/archive</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/triumphs/ryel@mac.com">http://autox.team.net/mailman/options/triumphs/ryel@mac.com</a><br></span></div></div></blockquote></div></blockquote><p style="font-size: 12pt; font-family: helvetica,arial,sans-serif; color: #333333;" class="default-style"><br> </p></body></html>